Epidural injection/back pain

Have any women gotten an epidural injection for herniated disks and it not work? So your doctor wants to try another with a new “cocktail?” It’s been a month since my injection and it hasn’t helped at all. I’m not on any pain medication and I’m in excruciating pain from sciatica. I’m willing to try anything (except get pain pills) but I thought he would have tried a nerve block medicine before another injection. Not going to lie the injection sucked but if anyone has any info on the second one working please comment.